Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

Not all types of approaches are available at all runways (or airports), and sometimes they are down for maintenance. Specific runways may be required due to wind, aircraft weight and runway condition and length. Most airlines ban "circling approaches" (using an approach to one runway end and then circling visually to land at a other) for safety reasons. ILS, which is probably the "close range guidance" you are thinking of, must be installed, maintained and calibrated individually per runway end. Visual aids cannot be used for approach if there is low cloud.

It is usual to be able to abort an approach and try again at the same airport using a different approach technology. But if the journalist wanted to find the most extreme example, it's not surprising that it happened at least once that an alternative wasn't available. This is probably "sampling bias"!

Note that final operational decisions are made by the aircraft commander. Aircraft do not "get diverted", except by decision of the "captain".



Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: